An information storage medium and an apparatus for recording and/or reproducing the information storage medium capable of controlling optimal recording power without an influence of an optimal power control (OPC) area in a layer upon an OPC area in a different layer. The information storage medium includes at least one information storage layer including an optimal power control area for obtaining an optical recording condition. OPC areas in adjacent information storage layers are disposed within different radiuses of the information storage medium. Accordingly, even when the information storage medium is made eccentric or has a manufacturing error, a recording property of the information storage medium is prevented from being degraded due to an influence of an OPC area in an information storage layer upon an OPC area in an adjacent information storage layer.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of recording data on a storage medium including a plurality of storage layers, comprising: reading recording speed information; and recording data on the storage layers of the storage medium at a recording speed, wherein each of the storage layers includes an optimal power control area for use in obtaining an optical recording condition, and at least one of a buffer area and a reserved area disposed at one side of the optimal power control area, and wherein the optimal power control areas in adjacent ones of the storage layers are disposed within different radii of the information storage medium such that one of the buffer area and the reserved area disposed in one of the storage layers faces the optimal power control area disposed in an adjacent one of the storage layers.
2. The method of claim 1 , wherein the optimal power control areas in the adjacent storage layers are spaced apart from each other by a distance in a radial direction of the storage medium, that corresponds to at least a tolerance required upon manufacture of the storage medium.
3. The method of claim 2 , wherein each of the storage layers further comprises another buffer area disposed on an opposite side of each of the optimal power control areas, and each of the buffer areas has a size corresponding to at least the tolerance.
4. The method of claim 1 , wherein the reserved area is disposed adjacent to one of the buffer areas disposed at one side of the optimal power control area in one of the storage layers such as to face the optimal power control area in an adjacent one of the storage layers.
5. The method of claim 1 , wherein each of the storage layers further comprises a plurality of data recording areas and another buffer area interposed between adjacent data-recording areas.
6. The method of claim 1 , wherein each of the storage layers further comprises a defect management area, a user data area, and another buffer area disposed between the defect management area and the user data area.
7. The method of claim 3 , wherein a length of each of the buffer areas in the radial direction of the storage medium is in the range of 5 to 100 μm.
8. The method of claim 3 , wherein the tolerance is obtained in consideration of an error in the determination of a start position of each area, a size of a beam for recording and reproduction, eccentricity, or combinations thereof.
9. The method of claim 1 , wherein a reproduction-only area storing reproduction-only data is disposed in one of the storage layers such that the reproduction-only area faces the optimal power control area of the adjacent one of the storage layers.
10. The method of claim 9 , wherein disk-related information and disk control data are recorded in the reproduction-only area for storing the reproduction-only data.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
May 12, 2006
March 4, 2008
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